Answer: No
Explanation:
2x-4=5x
-4 = 3x
x = -4/3
Keep x as a fraction, don't change it into a decimal.
Just because 6 is a whole number, positive, and cut off from -6.6 repeating does not make it right. If you plug in 6, it would not be correct, so -4/3 is the correct answer.